US PATENT SUBCLASS 562 / 566
.~.~.~.~.~.~ Ethylene diamine tetraacetic acid per se or salt thereof

Current as of: June, 1999
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562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
400  DF  .~ Carboxylic acids and salts thereof {14}
512  DF  .~.~ Acyclic {14}
553  DF  .~.~.~ Nitrogen bonded to carbon of organic radical (e.g., amino acids, etc.) {10}
561  DF  .~.~.~.~ Plural nitrogens {4}
565  DF  .~.~.~.~.~ Polycarboxylic {1}
566.~.~.~.~.~.~ Ethylene diamine tetraacetic acid per se or salt thereof

DEFINITION

Classification: 562/566

Ethylene diamine tetraacetic acid, per se, or salt thereof:

(under subclass 565) The compound which is ethylene diamine tetraacetic acid (figure below) or its salts and processes for its preparation not provided for above. [figure]